Conduit for electrical conductors



.(No Model.)

J. K.' McLAUGI-ILIN.

GONDUIT POR ELECTRICAL GONDUGTORS. No. 269,086. l Patented Deo'. 12, 1882.

WJZNESSES: [NVE/WOR,

UNlTED STATES PATENT einen.

JonN K. MCLAUGHLIN, or PHILADELPHIA, PENNSYLVANIA, AssiGNon or ONE-HALF To LEWIS H. TAYLOR, JR., or SAME PLAGE.

ooNDulT .li-'0R ELECTRICAL ooNDuoToes.

SPECIFICATIONformng part of Letters Patent No. 269,086, dated December 12, 1882. Application filed January 27, 1882. (No model.)

To all whom it may concern:

Be it known that I, JonNK. MGLAUGHLIN, a citizen of the United States, residing at Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented certain new and usefullmprovements in Oonduits for Electrical Conductors; and I do hereby declare the following to be a full, clear, and eX- act description ofthe invention, reference being had to the accompanying drawings, which Vform part of this specication, in which- Figure lis a perspective of my invention. Fig. Z is a detailed perspective. Fig. 3 is a transverse vertical section, Fig. 4 is a broken elevation of two conduit-sections and jointcoupling therefor, the latter being partly sectional; and Fig. 5 is a transverse vertical section of one of the conduit-sections.

Myiinprovements relate to a construction ot' electricalconductor conduits, whereby the same may be cast without corin g, and after being laid readily separated longitudinally for the purpose of securing access to their contents.

In an application of even date herewith for Letters Patent I have shown an electricalconductorcond uit composed of pipes or tubes rectangular in crosssection and not divided longitudinally. In this present application my improvements consist inmakingsuch conduitsections longitudinally divided orseparated at two of their corners, each half-section thus being composed of a side and a top or bottom, the two halves being held together by jointcollars at their ends and by bolts and lugs located midway of the sections or at two or more pointsbetween such ends. Y

Referring to the accompanying drawings, A indicates a conduit composed ot' sections B B, which are formed with external ribs, b, and fastened together by joint-collars C, the latter formed in two halves, c c, said collars having a rib, c', and grooves o2 c2 for the reception of V the ribs b b, their parts being secured together by bolts c3 c3, passed through openings in their bent ends c4. The sections BB are made longitudinallydi vided at two of their corners-J5. e., at one upper corner and the diagonally-opposite lower corner. Each division thus consists of one vertical side, b', and the horizontal top or bottom piece, b2 or b3. The edges of the divisions are rabbeted, as shown, so as to lit snugly to form a tight joint at such meeting edges. The parts are provided midway or at two or more points between their ends with lugs d d, having openings for the passage of bolts D, whereby they are drawn powerfully together.

The joint-collars CU, which are of the same construction as those described and claimed in my other application, in the present case not 6o only form end couplings for the sections, but also serve to clamp the divisions ot' said sections together, and thus make tight joints on thelongitudinal dividing-lines ofsuch sections.

E E represent vertical partitions, with shelves c for the support of conductors con tained in the conduit, and F are gates in the sides of said conduits for affording access to the contents of the latter. These partitions andthe shelves and gates, being described and claimed in my 7o aforementioned other application, are not herein claimed by me.

Under lsome circumstances, where the gates would not afford ample enough access to the conductors, the conduit-sections may be longi- 7 5 tudinally separated, thetop and one sideorthe bottom and its attached side being taken away.

Under some circumstances it may be desired to remove an entire section of the conduit without disturbing the continuity ot' the conductors 8o laid therein. The construction herein described will permit such removals, which would not be practicable if the conduit-sections were eachin one whole piece. Another advantage of' this divisional form of conduits is that the casting otl same can be effected without coring, which is necessary it each section be formed of but a single piece.

The conduit thus constructed, being rectangular incross-section, is susceptible of division 9o into compartments ot' equal size, which a circular conduit does not readilyperinit. The sides being straight, gates for entrance may be more readily formed and be more easily iit'ted and moved than it made on curved sides. The two divisions which compose each section being exactly alike, one pattern will answer for both ,and either -division will serve for the top or bottom of the conduit, which will be found very convenient in laying and repairing the same. roo

I am aware that conduits f or various pur.

` poses have heretofore been made of sections ot' half-round pipe, such sections being coupled together; hence I do not claim the same, my invention being confined to angular sections, which when jointed together, form rectangular conduits which are susceptible of division into compartments of equal aren,readily accessible through lateral openings.

e What I claim as my invention is as follows: In a conduit for electrical conductors, the combination of sections, each of which is made of two parts lor divisions, both the divisions which constitute a sectionbeing exactly alike, having two straight sides at right angles to each other, provided With external end ribs, with internally ribbed andv grooved clamp-collars, 15 which embrace the ends of said sections and receive the external ribs on the divisions, substantially as shown and described.

In testimony that Iclaim the foregoing I have hereunto set my hand this 24th day of Januzo ary, 1882.

JOHN K. MCLA'UG ElLIN.

Witnesses:

GHAS. F. VAN HORN, M. D. OoNNoLLY. 

